Bash Advanced Scripting & File I/O

Explore Bash advanced scripting such as how to parse output from external commands and handle file I/O. See how to catch and trap interrupts and signals. Employ brace expansion with data ranges. Generate and execute strings as commands with eval. Apply default values for input to handle undefined variables. Create a recursive function and script. Display textual progress indicators. Make a dynamic script inside a script. Read data from a text file into an array with map file. Edit File Contents with the sed command and select data from files with the awk command.